Saw-swage



(No Model.) 2 Sheets-Sheet 1.v

A. STEVENS.

SAW SWAGE. No 340,016. Patented Apr. 13, 1886.

Nfimaua.

PATENT @rricn.

ALOXZO STEVENS, OF WAUSAU, WISCONSIN.

SAW-SWAG E.

ECEPZUATIOI-i forming part of Letters Patent No. 340,016, dated April 13,1836.

Application filed February 8, 1886. Serial No. 191,173. (No model.)

To all whom it may concern:

Be it known that I, ALONZO STEVENS, a citizen of the United States of America, residing at \Vausan, in the county of Marathon and State of Visconsin, have invented certain new and useful Improvements in Swages for Sawleeth, of which the following is a speeitication, reference being had therein to the accompanying drawings.

My invention is a saw-tooth swage, and, in brief, embraces the following novel features: A swage-frame, consisting of a pair of slightly-separated and bolt-clamped standard side plates having transversal and lever-turned fore-eccentric shaft, which reciprocally moves an intermedial half-block, conveying motion to a rectangular stamp-block, thus slid forward within eonnterfacing slide slots, cut horizontally across and into the inner faces of said side plates, and held back. against said shaft eccentric by a connterprcssing armspring, suitably secured against the front edge ofone ofsaid sides, also, said stanipblock having reversible and outwardly-inclining toothdies counter-projecting above and below the outerend of said block, and having, also, a strut --spring and screw -set tooth -gage, the fixed end of which is screwed against the basal edge of said block, while the plane top of its gage-face correspondingly projects from the foot of the stampingfaee of the said toothdie above; also, a seven-sided or septagonal shaft-anvil, fittingly and transversely'set into both said framesides and suitably in front of said upper stamp-die; also, said eccentricshaft having an incline-slotted cam-roller setscrewed upon the end opposite to that of its lever-arm, and conveying alternate motion to an overhanging clamp-lcver through an angle roller-pin arbored underneath the end of the long arm of said clamplever, and intermedially engaged by and engaging, respectively, said cam-roller and said champ-lever; also, said clamp-lever is suitably pivoted between a pair of horizontally connterfacing bracket-hangers, and has an interniedial spring block pressed against the inner curved face of its shorter arm, and provided with a freely-projecting push-pin extending from the inner end of said spring-block to the inner face of the frame-side, to which said bracket-hangers are secured; also, near the top of said frame sides are a pair of clamping set-screws, their flat points counteriacing inwardly toward each other through said sides; also, another clamping set-screw screwing inwardly and directly opposite to the pressing end of said spring block push-pin; and, finally, in front of the lever-arm ofsaid eccentric-shaft, and attached to that side of the swageframe, is a segmentally curved and correspondingly slotted gage-plate, set-screwed to the curved plane of its vertical and rigidly-secured saddle-plate havinga double pairofhorizontally-projecting guidestuds, within which said gage-plate adjustably slides, all of which and their purposes are hereinafter more fully described, and illustrated by the accompanying drawings, in which like letters designate identical parts of my invention in the different figures respectively.

Figure 1 represents the front side of said swage-frame, showing the front end of the eccentric shaft and its level-arm, the lever-arm throw-gage setscrewed upon its rigidly-secured saddle-plate, the saw-blade set-screws, the front end of the septagonal anvil-die, and the front edge of the stampingdie returnspring. Fig. 2 is the rear side of said frame, showing the cam-roller on the rear end of the eccent'ric-shz'ift, the intermedial roller of the long arm of the clamping-lever pivoted between its horizontal hanger-brackets, and the upper and counterfacing saw-blade clamping screw. Fig. 3 is the front end of said swageframe, showing the front end of said stampblock and four faces of its seven-sided shaftanvilbetween the separated side plates of the swage-franie, the returnspring of said stampblock on the front edge of the front side of said frame, the upper pair of counter-facing clamping-screws, and the single set-screw counterfacing the clamping push-pin of the bracket-hung and eccentric-shaft roller and lever-clamp on the rear side of said frame, and the front edges of the lever-arm. gageplate and its rigidly-secured saddle-plate. Fig. 4 is the inner face of the rear side of said fran1e,showing the eccentric and the intermedial half-block, into which it engages upon each side of the transversal motor-shaft, the

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swaging devices, together with the separative screw-blocks between the frame sides.

The object of said invention is to provide a saw-tooth swage having a gripping and clamping mechanism for holding the tooth to be swaged, which shall automatically clamp the tooth with any desired pressure before the swaging begins, hold it without increase of pressure until the desired extent of swaging has been completed, and then release the saw suificiently to swage another tooth or to allow it to be entirely withdrawn.

The letter A represents the said swageframe, the side plates, B, of which are'suitably separated. with sufficient space between to properly support and operate the inclosed stamping mechanism by the blocks (I, through which the bolts or screws pass to clamp and hold said sides firmly and evenly opposite to each other, as shown.

O is the said eccentricshaft, which is supported within suitable bearing-holes made transversely and oppositely through said frame-sides, as shown, and suitablyturned by a very strong and powerful lever-arm placed and set-screwed upon the front and squared end of said shaft. The eccentric I), made on the middle of said shaft, so as to work between the framesides, as shown, has but little throw, in order that its fore-eccentrio motion shall have great and safe power; and it engages within the fitting concave of the intertnedial half-box, c, which has a free and horizontally-reciprocal movement with the eccentric, in order to convey said motion with the utmost directness and power to the said stamp-block d, which thereby is forcibly slid forward between said frame-sides within counterfacing slot or cleat grooves .e, horizontally and correspondingly cut across the inner faces of both said frame-sides, as shown, said stamp-block being made to return to its normal position, closely following the reverse movement of saidecccntriqby the angle-arm of the return-spring f, screwed to the front edge ofone side ofsaid frame, as shown. The stamp-block d has the pair of said toothstamping dies 9 rigidly formed or fixed upon its rectangularly-faced outer end and projecting by suitably-inclined faces to an angleedge above and below said block end,as shown, in order to present a proper stamping or pressing face against the back of the saw-tooth clamped andready to be swaged in said frame. Said stamp-dies are also made interchangeable, and by simply reversing the top and bottom edges of said block d allow a worn or damaged oneabove to be replaced by the sound one below, thus doubling the usefulness of the dieblock. The anvil or stationary die D is a seven-sided and septegonal shaft, and firmly set in corresponding and closely-fitting bearings, made transversely and horizontally through both said frame-sides, as shown, so that the two lower rear faces of said shaftanvil will fit the gullet of the said clamped saw-tooth, being suitably fixed in frontot' the stamp-face of the movable die,-will properly resist the pressure of the said shaft-eccentric, thereby to swage the interposed tooth into the desired form. In order to prevent the overspread of the said interposed tooth end below the bottoin'of the stainp-die face, and cause the tooth-metal to run evenly sidewise. instead, during the swinging process, thus properly broadening the point of the tooth, the strut-spring tooth-gage h is provided and foot-screwed against the bottom edge of said stainp-block d, said spring-gage being made to closely fit over the angles and edges of said block and lower die, and having a horizontal plane face on the top of its vertical arm, as shown. The depth to which the said sawteeth areto be severally inserted between said stamp-die and anvil is regulated also by the said tooth-gags set-screw s,-th e flat point of which is screwed horizontally through the said vertical arm ofthe spring-gage against the front end of the stamp-block, as shown.

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thereby regulatively extending the depth of the inclined face of the stamp-die, and consequently the length of the swaged tooth. The anvil-die can be readily taken out and replaced in its bearings with auy one of its shaftfaces suitably opposite the stamp-face of said I movable die, so that should one of its angular shaft-ledges crumble or become otherwise useless another angle edge with 'its adjacent faces can be readily replaced without furnishing a new anvil-die. The said several setscrews for the purpose of suit-ably adjusting and holding the saw-blades, whether rip or crosscut, in the swage-frame before the clamping mechanism is moved, are the pair of flatpointed ones i,oppositely placed near the top of the frame, and the single one, j,'screwing through the front frame-side with its pointface brought directly opposite that of said clamping push-pin, as shown.

The clamping mechanism,as shown,consists substantially of said cam-roller E, suitably fixed upon the rear end of said eccentric-shalt G,for the purpose of engaging, whenever said shaft is turned forward by its power-lever L,-

the outwardly-moved angle-roller k,which,being rolled upon the spiral incline of said camroller, conveys alternate motion to the clamping-lever Z, which, being vertically pivoted near its front or clamping end within said bracket-hangers m,converts said levermotion into a steady but powerful pressure, through said intermediatespring-blockm,upon the said clamping pusl'1-pinp,whi(:h firmly clamps the unswaged saw-tooth, adjusted, as aforesaid, upon the shalt-anvil and between the framesides, against the counter-facing setscrew j, which clamping process is simultaneously automatic with the foreeccentric throw of said stampdie against the anvil-die, and when the return motion of said eccentric is made, followed by said back-springing stamp-die, the clamping-pressure upon said swaged tooth is also automatically withdrawn, and said swaging process upon said saw-tooth has been accom plished. The extent of the pitch of the lever of said shaft 0 and the sequent throw of its fore-eccentric b are regulatively limited by the said lever-gage G, the center ot'the segmental curve of which coincides with that of said eccentricshat't, and which is sct-screwed upon its saddle'plate o, vertically secured against the outer face of the front side of said swageframe, as shown. The cross-beam (shown in the top and front of said swage frame of the drawings) is to be discretionally used to simply support the structureagainst any sidewise pressure when in use; therefore,

What I claim as new, and desire to secure by Letters Patent, is-

1. In the swage-frame consisting of a pair of slightly-separated and bolt-clamped standardplates, the transversal turn-shalt having power lever and intermeci ll fore-ect entric, in combination with the horizontally-moved and vertically-reversible stamp-block having the intervening eccentric block, interchangeable stamp dies, returnmotion armspring, and screw-set tootlrgageand with the transversal shaft-anvil having several sides and included angle edgcsall made and adjusted as herein described, to simultaneously and automatically cooperate with the adjunctive clamping apparatus adj ustably attached upon andin therear standard side of said swage-t'rame,and consisting of the cam-roller adjusted upon the rear end otsaid eccentric-shaft and having the spiral incline in its outer and engaging face, the engaged rollerof the horizontally-bracketed clam pinglcver, and its return springing pushpin inwardly projecting through said rear frame-side toward the set screw counterpointing through the front frame side, all substantially as and for the purposes herein specified.

2. In the swage-frame herein described, the combi nation, with the fore-eccentrio-transversal turnshal't, of the reversible stamp-block, horizontally slid in counterfacing and supporting slot-grooves in the inner faces of the separated frame-sides, and having the intervening eccentric-block,interchangealolestampdies, returning arm spring, and counterspringing screw set tooth gage, and of the stanip-hlock transversal shal't'anvil having several interchangeable sides and angle-edges, substantially as and for. the purposes herein specified.

3. In the swage-frame containing the sawtooth svaging portion of the machine herein described, the combinatiomwith the said foreeccentric swaging-shai't, ol'the said adjunctive saw-clamping portion, consisting of the said shaft coupling and automatically engaging canrrol ler, the vertically-pivoted and horizontally bracket-hung clampinglever having at the end of its long arm the power-connective friction-roller, and at the curved end of its clampingshort arm the return springing push pin, sub tantially as and for the purposes herein specified.

In testimony whereof I affix my signature in presence of two witnesses.

ALONZO STEVENS.

Witnesses:

R. P. llIANSON, B. G. PLUMEN. 

